Upsetting tires and other metallic bars



(ModeLy J. W. MGKINNY. v Up settingTires and OtherMetallio Bars. No 241,396.

Patented May 10, I881.

WITNESSES: @Z MM; 77 6 ATTORNEYS.

N. PETERS, FEMS-Lithographer, Wahn'ngfon. D. C.

UNITED STATES PATENT OFFICE.

JOHN MGKINNY, OF SOUTH CHARLESTON, OHIO'.

UPSETTING TIRES AND OTHER METALLIC BARS.

SPECIFICATION forming part of Letters Patent No. 241,396, dated May 10, 1881.

Application filed November 12, 1880.

To all whom it may concern Be it known that I, JOHN \V. MGKINNY, of South Charleston, inthe county of Clarke and State of Ohio, have invented a new and useful Improvement in Upsetting Tires and other Bars of Metal, of which the following is a specification.

The invention consistsin combining serrated plates, serrated cams, tables, and a wedgeshaped plate, serrated on both sides, as hereinafter described.

In the accompanying drawings, Figure 1 is a top View of a machine embodying my improvements. Fig. 2 is a longitudinal vertical section, taken in the line 00 .r of Fig. 1. Fi s. 3 and 4: are detail views.

imilar letters of reference indicate corrc-i 1 spiral spring may be arranged in any suitable sponding parts.

The working parts of the apparatus are supported by a base or platform, A, of any suitable construction. On the top of this base or platform rests a stationary table, B, and a movable table, 0. The movable table is arranged to slide horizontally on the platform A, and is guided by means of tongues on said platform engaging with grooved ways on said movable table. The stationary table and movable table are both provided with raised sides, in the upper edges of which are bearings 11 for the 0 journals of rollers D D the faces of which are grooved for engagement with the tire, in order to prevent lateral vibration thereof while being bent. About midway between these two rollers, but on a higher plane, is a third roller, D journaled in standards attached to the stationary table. One of these standards is attached to the raised side of the table by means of a bolt or screw, d so that the roller may be readily removed when desired. The roller D is provided with longitudinal grooves or serrations, to enable it to engage with the bar to prevent slipping. The bottoms of both the stationary and movable tables are provided with removable plates E, the upper surfaces of which are serrated, for engagement with the lower surface of the tire or bar to be upset. These plates fit snuglyin recesses in the tables, so as to prevent their accidental displacement when in use but they are made removable, in order that they may be replaced by new ones when the serrations become worn.

Immediately over the serrated plates E E (ModcL) are two cams, G G, the faces of which are ser rated like the faces of said plates. The serrations on the cams and the plates run toward the center of the machine. The cams Gwork on bearings attached to the upright sides 0tv the tables B and 0. Each cam is provided with an upright arm or stem, 9. The stems g of the two cams are connected by a toggle-joint, h h, with the upper end of a rod, 71.2, the lower end of which is connected to atreadle,H,arranged on one side of the machine.

On the under side of the base or platform is a spring, J, one end of which bears upward against the treadle H, so as to have a tendency to force the faces of the cams upward from the plates E.

Instead of the curved spring here shown, a

manner.

To the treadle H is attached the lower end of a bar, K,the upper end of which is widened and bent at a right angle and turned inward at a point immediately over the contiguous edges of the stationary table and movable table. Said horizontal upper portion of said bar K works in, and is guided by, a slot in one of the standards which carry the roller D In the base or platform A is journaled a horizontal shaft, L, one end of which is provided with ahandle, l, for turningit, and the other end is provided with a screw-thread. This screwthreaded portion passes through a perforated lug, m, on the under side of the movable table 0. This lug may be provided with a screwthread, or in lieu thereof there may be a nut, 02, on each side of the lug, as shown. The upper surfaces of the tables 13 and O are inclined downward and inward toward each other and toward the center of the machine, so as to form a concave surface for the bar which is to be upset, after it has been bent to form a tire.

When the bar is to be bent to form a tire it is passed over the rollers D D and under the roller D so as to bend it in the form indicated by the upper dotted lines in Fig. 2, the cams G G having previously been removed. The upsetting is accomplished in the followin g manner: The rollers D D D are removed and the cams Gr G are replaced. The tire is passed between the plates E and cams G, and the treadle H is then depressed and held down, so

as to cause the camsG and plates E to bite the bar and hold it firmly between them. The screw-shaft L is then turned so as to draw the movable table 0 toward the stationary table B. By means of the widened horizontal arm of the barK the metal is prevented from springing or bulging upward at the point between the tips of the cam.

When a straight bar is to be upsetwithout being bent two auxiliary plates, P, are employed. Each plate is thicker at one end than at the other, and is provided with serrations on the under side for engagement with those on the plate E, and serrations on the upper side running in the same direction as those on the plate E. (See Fig. 4.) The straight bar is passed under the cams G, and its under surface is engaged by a level serrated surface formed by the auxiliary plates, instead of a concave surface, as before described.

I claim as new and desire to secure by Letters Patent- The combination, with the serrated plates E, serrated cams G G, and the tables B O, of the wedge-shaped plate P, serrated on both sides, as and for the purpose specified.

JOHN WILLIAM MGKINNY.

Witnesses:

WILLIAM DINGESS, THOMAS J. McNUL'rY. 

